User interface



FIG. 1 is a top perspective view of a user interface;

FIG. 2 is a front view of the user interface of FIG. 1;

FIG. 3 is a top view of the user interface of FIG. 1;

FIG. 4 is a left side view of the user interface of FIG. 1; and,

FIG. 5 is a right side view of the user interface of FIG. 1.

Portions of the drawings shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a user interface, as shown and described. 